William Henry Hadow (1859–1937) was an influential English composer, musicologist, and educator, primarily associated with the late Romantic and early 20th-century classical music genres. He is noted for his contributions to music theory and education, particularly through his writings, which helped shape music appreciation in England. Hadow composed various works, including orchestral pieces, chamber music, and songs. Some of his notable compositions include the "Piano Concerto in C minor" and the "Symphonic Suite." His "Music in the House" series, aimed at introducing classical music to a broader audience, remains significant in the context of music education. In addition to his compositions, Hadow was a prominent advocate for the study and analysis of music, authoring several important texts, including "The Psychology of Music" and "The Music of the English Renaissance." His impact on music was marked by his commitment to fostering musical understanding and appreciation, as well as his role in nurturing future generations of musicians and educators. Hadow's legacy persists in the fields of music education and theory, reflecting his dedication to enhancing the cultural landscape of British music.